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Now showing items 71-80 of 436
Evaluation of the Maturity Method to Estimate Concrete Strength in Field Applications
(2008-09-09)
Estimating the strength of concrete is essential to contractors and engineers to allow concrete construction operations to proceed safely and expediently. The maturity method is a technique that allows the in-place concrete ...
Design Optimization and Health Monitoring for Multi-Directional Composite Flywheel Energy Storage Systems
(2008-09-09)
Flywheels are used to store kinetic energy through the rotation of an inertial mass, which usually rotates at very high speeds. Generally, that energy can be extracted (using a motor-generator system) in the form of ...
Evaluation of the bulk sweetener D-tagatose and the high intensity sweetener Splenda as sugar replacers in cookies
(2008-09-09)
For a variety of health reasons, consumers are consuming more foods prepared with less metabolizeable sugars and artificial sweeteners. Before sugar replacers can be used in foods, their effect on food characteristics ...
Health Monitoring for Flywheel Rotors Supported By Active Magnetic Bearings
(2008-09-09)
Magnetic bearings are not a new technology in themselves, yet the control and implementation of such devices is still a budding science. Magnetic bearings are particularly attractive for some applications because of the ...
Dynamic Modeling of Polymer Electrolyte Membrane Fuel Cell Stack with 1D and 2D CFD Techniques
(2008-09-09)
The PEM fuel cell is a potential candidate for use as an alternative power source in future vehicle and power conditioning applications. The electric power, as a load, continuously varies as a function of time in the ...
Changes in energy expenditure associated with injestion of high protein, high fat versus high protein, low fat meals among underweight, normal weight, and overweight females
(2008-09-09)
Changes in energy expenditure in response to ingestion of a high protein, high fat meal versus an isocaloric high protein, low fat meal were investigated in 21 females, aged 19-28 years. Subjects were classified based on ...
Simulation, Estimation, and Experimentation of Vehicle Longitudinal Dynamics That Effect Fuel Economy
(2008-09-09)
In this thesis, longitudinal vehicle dynamics are researched with an emphasis on heavy trucks and fuel economy. Commercial vehicles display large variations in their parameters, and due to many current trends in transportation ...
Some Studies on Modeling and Simulation of a Disc Brake System for Squeal Prediction
(2008-09-09)
Most mechanical systems that involve a sliding contact experience some degree of friction induced self-excited vibration. A well known example is brake squeal which is a top concern for automotive companies, who must spend ...
Microstructural effects on fracture behavior of particulate composites: Investigation of toughening mechanisms using optical and boundary element methods
(2008-09-09)
Particulate polymer composites are used in a variety of engineering applications. These are generally two phase materials with polymeric phase reinforced by a filler phase to improve overall mechanical, thermal and/or ...
Management and Landscape Influences on Soil Organic Carbon in the Southern Piedmont and Coastal Plain
(2008-09-09)
Southern Piedmont and Coastal Plain soils have undergone severe degradation, which is reflected in low soil organic carbon (SOC) contents. Restoration of SOC would improve soil quality and C sequestration, leading to a ...